HSM Ammunition Starline Rifle Brass Unprimed Cases 357 Rem Max Caliber Handgun Brass 100 Per Bag. 357 Maximum was developed in the early 80's by Ruger and Remington Arms as a silhouette cartridge for the Blackhawk revolver. This beefed up elongated .357 Magnum has also been chambered in Dan Wesson revolvers as well as several single shot rifles and pistols including the T/C Contender. Specifications for Starline Brass Unprimed Cases 357 Rem Max Handgun Brass: Manufacturer: HSM Ammunition Gun Type: Rifle Caliber: .357 Remington Maximum Primed: No Quantity: 100 Per Bag Fabric/Material: Brass Package Contents: Starline Brass Unprimed Cases 357 Rem Max Handgun Brass